Projects · Justice & Custodial
Grendon Underwood, near Aylesbury, Buckinghamshire·In developmentJustice & Custodial
New prison at Grendon/Springhill (GS2)
- StagePreconstruction; on site since Dec 2024 for early works; Reserved Matters Application being prepared
- Valuec. £500m
- Next milestoneSubmit Reserved Matters Application and discharge planning conditions; completion targeted 2031
- Last checked1 November 2026
What has changed on this project, and when
- Next milestone: Submit Reserved Matters Application and discharge planning conditions; completion targeted 20312 November 2026 · previously: Discharge of reserved matters/conditions ahead of a construction start; no build start yet.
- Stage: Preconstruction; on site since Dec 2024 for early works; Reserved Matters Application being prepared2 November 2026 · previously: pipeline
- Status: In development2 November 2026 · previously: At tender
- Value: c. £500m2 November 2026 · previously: New Prisons Programme (not separately disclosed)
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